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From dinner plate to sewerage system
eles-0056
1.
Identify in order the parts of the digestive system that food passes through from your first bite
to when it leaves your body.
2.
Distinguish between incisor teeth and molar teeth.
3.
When you swallow food, why doesn’t it go into your lungs instead of your stomach?
4.
What is a bolus?
5.
How are the contents of faeces different from the contents of chyme?
6.
One of the functions of hydrochloric acid in your stomach is to provide the right environment
for the enzymes that break down protein. Describe one other function of the acid in the
stomach.
7.
In which part(s) of the digestive system do the following occur?
(a)
Enzymes are added to food.
(b)
Most of the nutrients from food are digested.
(c)
The bolus is formed.
(d)
Faeces is stored before expulsion from the body.
(e)
Bile and pancreatic enzymes are added to food.
© John Wiley & Sons Australia, Ltd 2009
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8.
Explain how nutrients from the small intestine reach all the cells in your body
9.
Why do you think it is important to chew your food thoroughly before swallowing? Give at
least two reasons.
10.
If you were to eat while standing on your head, food would still reach your stomach. Explain
why.
11.
What functions does saliva have in the digestive process?
12.
When you have diarrhoea, your faeces is runny because very little water has been removed
from it. Which part of the digestive system has not done its job properly?
© John Wiley & Sons Australia, Ltd 2009
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